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PhabricatorMentionRemarkupRule.php
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Tue, Nov 26, 13:40

PhabricatorMentionRemarkupRule.php
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<?php
final class PhabricatorMentionRemarkupRule extends PhutilRemarkupRule {
const KEY_RULE_MENTION = 'rule.mention';
const KEY_RULE_MENTION_ORIGINAL = 'rule.mention.original';
const KEY_MENTIONED = 'phabricator.mentioned-user-phids';
// NOTE: The negative lookbehind prevents matches like "mail@lists", while
// allowing constructs like "@tomo/@mroch". Since we now allow periods in
// usernames, we can't resonably distinguish that "@company.com" isn't a
// username, so we'll incorrectly pick it up, but there's little to be done
// about that. We forbid terminal periods so that we can correctly capture
// "@joe" instead of "@joe." in "Hey, @joe.".
//
// We disallow "@@joe" because it creates a false positive in the common
// construction "l@@k", made popular by eBay.
const REGEX = '/(?<!\w|@)@([a-zA-Z0-9._-]*[a-zA-Z0-9_-])/';
public function apply($text) {
return preg_replace_callback(
self::REGEX,
array($this, 'markupMention'),
$text);
}
protected function markupMention($matches) {
$engine = $this->getEngine();
if ($engine->isTextMode()) {
return $engine->storeText($matches[0]);
}
$token = $engine->storeText('');
// Store the original text exactly so we can preserve casing if it doesn't
// resolve into a username.
$original_key = self::KEY_RULE_MENTION_ORIGINAL;
$original = $engine->getTextMetadata($original_key, array());
$original[$token] = $matches[1];
$engine->setTextMetadata($original_key, $original);
$metadata_key = self::KEY_RULE_MENTION;
$metadata = $engine->getTextMetadata($metadata_key, array());
$username = strtolower($matches[1]);
if (empty($metadata[$username])) {
$metadata[$username] = array();
}
$metadata[$username][] = $token;
$engine->setTextMetadata($metadata_key, $metadata);
return $token;
}
public function didMarkupText() {
$engine = $this->getEngine();
$metadata_key = self::KEY_RULE_MENTION;
$metadata = $engine->getTextMetadata($metadata_key, array());
if (empty($metadata)) {
// No mentions, or we already processed them.
return;
}
$original_key = self::KEY_RULE_MENTION_ORIGINAL;
$original = $engine->getTextMetadata($original_key, array());
$usernames = array_keys($metadata);
$users = id(new PhabricatorPeopleQuery())
->setViewer($this->getEngine()->getConfig('viewer'))
->withUsernames($usernames)
->execute();
if ($users) {
$user_statuses = id(new PhabricatorCalendarEvent())
->loadCurrentStatuses(mpull($users, 'getPHID'));
$user_statuses = mpull($user_statuses, null, 'getUserPHID');
} else {
$user_statuses = array();
}
$actual_users = array();
$mentioned_key = self::KEY_MENTIONED;
$mentioned = $engine->getTextMetadata($mentioned_key, array());
foreach ($users as $row) {
$actual_users[strtolower($row->getUserName())] = $row;
$mentioned[$row->getPHID()] = $row->getPHID();
}
$engine->setTextMetadata($mentioned_key, $mentioned);
foreach ($metadata as $username => $tokens) {
$exists = isset($actual_users[$username]);
if ($exists) {
$user = $actual_users[$username];
Javelin::initBehavior('phabricator-hovercards');
$tag = id(new PHUITagView())
->setType(PHUITagView::TYPE_PERSON)
->setPHID($user->getPHID())
->setName('@'.$user->getUserName())
->setHref('/p/'.$user->getUserName().'/');
if (!$user->isUserActivated()) {
$tag->setDotColor(PHUITagView::COLOR_GREY);
} else {
$status = idx($user_statuses, $user->getPHID());
if ($status) {
$status = $status->getStatus();
if ($status == PhabricatorCalendarEvent::STATUS_AWAY) {
$tag->setDotColor(PHUITagView::COLOR_RED);
} else if ($status == PhabricatorCalendarEvent::STATUS_AWAY) {
$tag->setDotColor(PHUITagView::COLOR_ORANGE);
}
}
}
foreach ($tokens as $token) {
$engine->overwriteStoredText($token, $tag);
}
} else {
// NOTE: The structure here is different from the 'exists' branch,
// because we want to preserve the original text capitalization and it
// may differ for each token.
foreach ($tokens as $token) {
$tag = phutil_tag(
'span',
array(
'class' => 'phabricator-remarkup-mention-unknown',
),
'@'.idx($original, $token, $username));
$engine->overwriteStoredText($token, $tag);
}
}
}
// Don't re-process these mentions.
$engine->setTextMetadata($metadata_key, array());
}
}

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